Spawn slowly. (1 at a time) Hit 2.2k chain 0 defensive zerker for about 1.1k max. Hit slow, having slower slow them is a waste of time. Undead (Slay away) Almost no HP, was 1 rounding them.
Have a ranger/monk/zerk/pally take the add, easy to burn down.
Just kill the adds, a decent wizard can 1 shot them if they get a crit and if not they're down to about 30% hp. Adds also spawn slow so its easy to keep them in check.